# -*- coding: utf-8 -*-
import os

# Scrapy settings for kkspider project
#
# For simplicity, this file contains only settings considered important or
# commonly used. You can find more settings consulting the documentation:
#
#     https://doc.scrapy.org/en/latest/topics/settings.html
#     https://doc.scrapy.org/en/latest/topics/downloader-middleware.html
#     https://doc.scrapy.org/en/latest/topics/spider-middleware.html

BOT_NAME = 'kkspider'

SPIDER_MODULES = ['kkspider.spiders']
NEWSPIDER_MODULE = 'kkspider.spiders'

# Crawl responsibly by identifying yourself (and your website) on the user-agent
# USER_AGENT = 'kkspider (+http://www.yourdomain.com)'

# Obey robots.txt rules
# 爬虫会通过robots过滤掉url，所以这里改为False
ROBOTSTXT_OBEY = False

# Configure maximum concurrent requests performed by Scrapy (default: 16)
# CONCURRENT_REQUESTS = 32

# Configure a delay for requests for the same website (default: 0)
# See https://doc.scrapy.org/en/latest/topics/settings.html#download-delay
# See also autothrottle settings and docs
# DOWNLOAD_DELAY = 3
# The download delay setting will honor only one of:
# CONCURRENT_REQUESTS_PER_DOMAIN = 16
# CONCURRENT_REQUESTS_PER_IP = 16

# Disable cookies (enabled by default)
# COOKIES_ENABLED = False

# Disable Telnet Console (enabled by default)
# TELNETCONSOLE_ENABLED = False

# Override the default request headers:
# DEFAULT_REQUEST_HEADERS = {
#   'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
#   'Accept-Language': 'en',
# }

# Enable or disable spider middlewares
# See https://doc.scrapy.org/en/latest/topics/spider-middleware.html
# SPIDER_MIDDLEWARES = {
#    'kkspider.middlewares.KkspiderSpiderMiddleware': 543,
# }

# Enable or disable downloader middlewares
# See https://doc.scrapy.org/en/latest/topics/downloader-middleware.html
DOWNLOADER_MIDDLEWARES = {
    'kkspider.middlewares.RandomUserAgentMiddleware': 543,
    'scrapy.downloadermiddlewares.useragent.UserAgentMiddleware': None,
}

# Enable or disable extensions
# See https://doc.scrapy.org/en/latest/topics/extensions.html
# EXTENSIONS = {
#    'scrapy.extensions.telnet.TelnetConsole': None,
# }

# Configure item pipelines
# See https://doc.scrapy.org/en/latest/topics/item-pipeline.html
# item流进pipe管道的配置，数字代表的是流入的顺序，越小越早
ITEM_PIPELINES = {
    'kkspider.pipelines.KkspiderPipeline': 300,
    # 'scrapy.pipelines.images.ImagesPipeline': 200,
    'kkspider.pipelines.ArticleImagePipeline': 200,
    'kkspider.pipelines.JsonExporterPipeline': 250,
    # 'kkspider.pipelines.MysqlPipeline': 260,
    'kkspider.pipelines.MysqlTwistedPipeline': 260,

}
# 配置item中图片下载的字段，根据此字段下载图片
IMAGES_URLS_FIELD = "from_image_url"
# 设置下载图片的保存路径，注意需要安装PIL库才能下载图片
project_dir = os.path.abspath(os.path.dirname(__file__))
IMAGES_STORE = os.path.join(project_dir, "images")
RANDOM_UA_TYPE = "random"
# Enable and configure the AutoThrottle extension (disabled by default)
# See https://doc.scrapy.org/en/latest/topics/autothrottle.html
# AUTOTHROTTLE_ENABLED = True
# The initial download delay
# AUTOTHROTTLE_START_DELAY = 5
# The maximum download delay to be set in case of high latencies
# AUTOTHROTTLE_MAX_DELAY = 60
# The average number of requests Scrapy should be sending in parallel to
# each remote server
# AUTOTHROTTLE_TARGET_CONCURRENCY = 1.0
# Enable showing throttling stats for every response received:
# AUTOTHROTTLE_DEBUG = False

# Enable and configure HTTP caching (disabled by default)
# See https://doc.scrapy.org/en/latest/topics/downloader-middleware.html#httpcache-middleware-settings
# HTTPCACHE_ENABLED = True
# HTTPCACHE_EXPIRATION_SECS = 0
# HTTPCACHE_DIR = 'httpcache'
# HTTPCACHE_IGNORE_HTTP_CODES = []
# HTTPCACHE_STORAGE = 'scrapy.extensions.httpcache.FilesystemCacheStorage'

MYSQL_HOST = "127.0.0.1"
MYSQL_USERNAME = "root"
MYSQL_PASSWORD = "wh970121"
MYSQL_DBNAME = "python"

# 动态设置路径，避免通过scrapy生成爬虫项目的时候报错
import sys

BASE_DIR = os.path.dirname(os.path.abspath(os.path.dirname(__file__)))
# 将路径加入到python路径中去
sys.path.insert(0, os.path.join(BASE_DIR, 'kkspider'))
